CN115537958A - Composition, electret master batch, preparation method and application of electret master batch, and method for preparing melt-blown fabric - Google Patents
Composition, electret master batch, preparation method and application of electret master batch, and method for preparing melt-blown fabric Download PDFInfo
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- CN115537958A CN115537958A CN202110729779.0A CN202110729779A CN115537958A CN 115537958 A CN115537958 A CN 115537958A CN 202110729779 A CN202110729779 A CN 202110729779A CN 115537958 A CN115537958 A CN 115537958A
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- electret
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- 239000004594 Masterbatch (MB) Substances 0.000 title claims abstract description 64
- 239000004744 fabric Substances 0.000 title claims abstract description 61
- 239000000203 mixture Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- -1 polypropylene Polymers 0.000 claims abstract description 83
- 239000004743 Polypropylene Substances 0.000 claims abstract description 65
- 229920001155 polypropylene Polymers 0.000 claims abstract description 65
- 150000002978 peroxides Chemical class 0.000 claims abstract description 46
- 150000001412 amines Chemical class 0.000 claims abstract description 22
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 17
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 13
- 239000000155 melt Substances 0.000 claims description 26
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims description 10
- FUSNPOOETKRESL-ZPHPHTNESA-N (z)-n-octadecyldocos-13-enamide Chemical compound CCCCCCCCCCCCCCCCCCNC(=O)CCCCCCCCCCC\C=C/CCCCCCCC FUSNPOOETKRESL-ZPHPHTNESA-N 0.000 claims description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- UAUDZVJPLUQNMU-UHFFFAOYSA-N Erucasaeureamid Natural products CCCCCCCCC=CCCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-UHFFFAOYSA-N 0.000 claims description 5
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 claims description 5
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 5
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 5
- HGPXWXLYXNVULB-UHFFFAOYSA-M lithium stearate Chemical compound [Li+].CCCCCCCCCCCCCCCCCC([O-])=O HGPXWXLYXNVULB-UHFFFAOYSA-M 0.000 claims description 5
- 235000019359 magnesium stearate Nutrition 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 5
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 4
- 125000000623 heterocyclic group Chemical group 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 claims description 4
- 229920005629 polypropylene homopolymer Polymers 0.000 claims description 4
- 150000001408 amides Chemical class 0.000 claims description 3
- 235000013539 calcium stearate Nutrition 0.000 claims description 3
- 239000008116 calcium stearate Substances 0.000 claims description 3
- WBWXVCMXGYSMQA-UHFFFAOYSA-N 3,9-bis[2,4-bis(2-phenylpropan-2-yl)phenoxy]-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane Chemical compound C=1C=C(OP2OCC3(CO2)COP(OC=2C(=CC(=CC=2)C(C)(C)C=2C=CC=CC=2)C(C)(C)C=2C=CC=CC=2)OC3)C(C(C)(C)C=2C=CC=CC=2)=CC=1C(C)(C)C1=CC=CC=C1 WBWXVCMXGYSMQA-UHFFFAOYSA-N 0.000 claims description 2
- CGRTZESQZZGAAU-UHFFFAOYSA-N [2-[3-[1-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoyloxy]-2-methylpropan-2-yl]-2,4,8,10-tetraoxaspiro[5.5]undecan-9-yl]-2-methylpropyl] 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C)=CC(CCC(=O)OCC(C)(C)C2OCC3(CO2)COC(OC3)C(C)(C)COC(=O)CCC=2C=C(C(O)=C(C)C=2)C(C)(C)C)=C1 CGRTZESQZZGAAU-UHFFFAOYSA-N 0.000 claims description 2
- 239000007795 chemical reaction product Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- MGNCLNQXLYJVJD-UHFFFAOYSA-N cyanuric chloride Chemical compound ClC1=NC(Cl)=NC(Cl)=N1 MGNCLNQXLYJVJD-UHFFFAOYSA-N 0.000 claims description 2
- JQVDAXLFBXTEQA-UHFFFAOYSA-N dibutylamine Chemical compound CCCCNCCCC JQVDAXLFBXTEQA-UHFFFAOYSA-N 0.000 claims description 2
- 238000002074 melt spinning Methods 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- SHDUFLICMXOBPA-UHFFFAOYSA-N 3,9-bis(2,4,6-tritert-butylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC(C(C)(C)C)=C1OP1OCC2(COP(OC=3C(=CC(=CC=3C(C)(C)C)C(C)(C)C)C(C)(C)C)OC2)CO1 SHDUFLICMXOBPA-UHFFFAOYSA-N 0.000 claims 1
- 239000005977 Ethylene Substances 0.000 claims 1
- 150000002989 phenols Chemical class 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 50
- 230000008901 benefit Effects 0.000 abstract description 16
- 230000000694 effects Effects 0.000 description 19
- 230000036541 health Effects 0.000 description 12
- 238000012360 testing method Methods 0.000 description 11
- 230000032683 aging Effects 0.000 description 8
- 239000002994 raw material Substances 0.000 description 7
- 238000000354 decomposition reaction Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000010924 continuous production Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- 239000006057 Non-nutritive feed additive Substances 0.000 description 3
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 3
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 description 3
- 230000036961 partial effect Effects 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- QSRJVOOOWGXUDY-UHFFFAOYSA-N 2-[2-[2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoyloxy]ethoxy]ethoxy]ethyl 3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C)=CC(CCC(=O)OCCOCCOCCOC(=O)CCC=2C=C(C(O)=C(C)C=2)C(C)(C)C)=C1 QSRJVOOOWGXUDY-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 239000004611 light stabiliser Substances 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- RKISUIUJZGSLEV-UHFFFAOYSA-N n-[2-(octadecanoylamino)ethyl]octadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NCCNC(=O)CCCCCCCCCCCCCCCCC RKISUIUJZGSLEV-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- JLZIIHMTTRXXIN-UHFFFAOYSA-N 2-(2-hydroxy-4-methoxybenzoyl)benzoic acid Chemical compound OC1=CC(OC)=CC=C1C(=O)C1=CC=CC=C1C(O)=O JLZIIHMTTRXXIN-UHFFFAOYSA-N 0.000 description 1
- YXHRTMJUSBVGMX-UHFFFAOYSA-N 4-n-butyl-2-n,4-n-bis(2,2,6,6-tetramethylpiperidin-4-yl)-2-n-[6-[(2,2,6,6-tetramethylpiperidin-4-yl)amino]hexyl]-1,3,5-triazine-2,4-diamine Chemical compound N=1C=NC(N(CCCCCCNC2CC(C)(C)NC(C)(C)C2)C2CC(C)(C)NC(C)(C)C2)=NC=1N(CCCC)C1CC(C)(C)NC(C)(C)C1 YXHRTMJUSBVGMX-UHFFFAOYSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- RCZRMCMDNRCJSE-UHFFFAOYSA-N OP(O)OP(O)O.C(C)(C)(C)C1=C(C(=CC(=C1)C(C)(C)C)C(C)(C)C)C(O)(C(CO)(CO)CO)C1=C(C=C(C=C1C(C)(C)C)C(C)(C)C)C(C)(C)C Chemical compound OP(O)OP(O)O.C(C)(C)(C)C1=C(C(=CC(=C1)C(C)(C)C)C(C)(C)C)C(O)(C(CO)(CO)CO)C1=C(C=C(C=C1C(C)(C)C)C(C)(C)C)C(C)(C)C RCZRMCMDNRCJSE-UHFFFAOYSA-N 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- 244000292604 Salvia columbariae Species 0.000 description 1
- 235000012377 Salvia columbariae var. columbariae Nutrition 0.000 description 1
- 235000001498 Salvia hispanica Nutrition 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 235000014167 chia Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate Chemical compound [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- ORECYURYFJYPKY-UHFFFAOYSA-N n,n'-bis(2,2,6,6-tetramethylpiperidin-4-yl)hexane-1,6-diamine;2,4,6-trichloro-1,3,5-triazine;2,4,4-trimethylpentan-2-amine Chemical compound CC(C)(C)CC(C)(C)N.ClC1=NC(Cl)=NC(Cl)=N1.C1C(C)(C)NC(C)(C)CC1NCCCCCCNC1CC(C)(C)NC(C)(C)C1 ORECYURYFJYPKY-UHFFFAOYSA-N 0.000 description 1
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 1
- 125000003386 piperidinyl group Chemical group 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000012321 sodium triacetoxyborohydride Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- 230000002195 synergetic effect Effects 0.000 description 1
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Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
- D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/544—Olefin series
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/02—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements ultrasonic or sonic; Corona discharge
- D06M10/025—Corona discharge or low temperature plasma
Abstract
The invention relates to a composition, an electret master batch, a preparation method and application thereof, and a method for preparing melt-blown fabric. The composition comprises 70-90 parts by weight of non-peroxide system melt-blown polypropylene, 10-40 parts by weight of electret and 1-2 parts by weight of antioxidant; the electret agent comprises stearate, hindered amine and amide compounds, the mass ratio of the stearate to the hindered amine is (1. Therefore, the composition has high-temperature stability and high processing temperature resistance, and can be used for preparing electret master batches of non-peroxide systems. Furthermore, the meltblown fabric prepared from the composition has the advantages of low volatile matter content, low odor and high filtration efficiency.
Description
Technical Field
The invention belongs to the technical field of materials, and particularly relates to a composition, an electret master batch, a preparation method and application of the electret master batch, and a method for preparing melt-blown fabric.
Background
The fiber mesh-shaped melt-blown cloth processed by electret is a core material of a medical protective mask, and has the functions of physical barrier and electrostatic adsorption of dust particles and aerosol. The melt-blown fabric is mainly prepared by melt-blowing and electrostatic electret treatment of polypropylene with ultrahigh melt index (MI is more than 1000g/10 min) and electret master batches which are prepared by taking the polypropylene with ultrahigh melt index as a base material and taking an electret as an active ingredient. Usually, the polypropylene base material in the ultra-high melt index polypropylene and the electret master batch is prepared from the traditional peroxide catalyzed chain-breaking low-melt index polypropylene, the ultra-high melt index polypropylene, the electret master batch and the melt-blown fabric prepared by the method often have residual peroxide with pungent smell and decomposition products thereof, for example, the peroxide DTBP (di-tert-butyl peroxide) is used as a chain-breaking catalyst, and the decomposition products contain various organic volatile substances such as methane, ethane, acetone, tert-butyl alcohol and the like, so that the mask has a large peculiar smell, and has potential harm to health after long-term wearing.
In addition, the existing melt-blown fabric has the problem of partial decomposition of the electret, the antioxidant and the processing aid in the preparation process, so that the long-acting electret effect of the melt-blown fabric is not satisfactory. In addition, in the process of preparing the melt-blown fabric, the common electret has weak compatibility with polypropylene, and is easy to migrate to the surface of the polypropylene during accelerated aging to absorb moisture to form a discharge path, so that the long-acting electret effect is poor.
Disclosure of Invention
In order to improve at least one of the technical problems, the invention provides a composition, which comprises 70-90 parts by weight of non-peroxide system melt-blown polypropylene, 10-40 parts by weight of electret, 1-2 parts by weight of antioxidant; the electret agent comprises stearate, hindered amine and amide compounds, the mass ratio of the stearate to the hindered amine is (1. Therefore, the electret agent has good compatibility with melt-blown polypropylene of a non-peroxide system, has high-temperature stability and high processing temperature resistance, and can be used for preparing electret master batches of the non-peroxide system. In addition, the melt-blown fabric prepared from the composition has the advantages of few volatile substances, low odor, long-acting electret effect, high filtering efficiency and the like.
The invention also provides an electret master batch which is formed by the composition. Thus, the electret masterbatch has all the features and advantages of the composition described above, and thus, the details are not repeated herein. Generally, the electret master batch does not contain peroxide, has the advantage of low odor and has small harm to human health.
The invention also provides a method for preparing the electret master batch, which comprises the steps of melting, extruding and granulating the composition at 260-280 ℃ to obtain the electret master batch. Therefore, the method has all the characteristics and advantages of the electret master batch, and the details are not repeated herein. In general, the electret master batch obtained by the method has the advantages of low odor and simple process.
The invention also provides application of the electret master batch in preparing melt-blown fabric. Therefore, the melt-blown fabric prepared from the electret master batch has the advantage of low odor, has little harm to the health of human bodies, and avoids the problems that the existing melt-blown fabric has pungent odor and is harmful to the health of human bodies after long-term use.
The present invention also provides a method of making a meltblown fabric comprising: mixing the non-peroxide system melt-blown polypropylene and the electret master batch, performing melt spinning at the temperature of 280-300 ℃, and performing corona discharge electret to obtain melt-blown cloth; wherein the electret master batch is the electret master batch. Therefore, the melt-blown fabric has all the characteristics and advantages of the electret master batch, and the details are not repeated. The meltblown fabric prepared by the method has the advantages of low odor and simple process.
Drawings
FIG. 1 is a flow chart of a method of making meltblown fabric according to the related art;
FIG. 2 is a flow chart of a method of making a meltblown fabric, in accordance with one embodiment of the invention;
FIG. 3 is a flow chart of a process for preparing a non-peroxide system melt blown polypropylene in accordance with one embodiment of the present invention.
Detailed Description
The following describes in detail embodiments of the present invention. The following examples are illustrative only and are not to be construed as limiting the invention. The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
The inventor finds that in the existing melt-blown fabric preparation method, referring to fig. 1, peroxide system melt-blown polypropylene is needed, and peroxide with pungent odor and decomposition products thereof remain on electret master batches and melt-blown fabrics prepared by using the peroxide system melt-blown polypropylene, so that the problem of harming human health is caused. Moreover, most of the existing electret master batches are prepared by a peroxide system melt-blown polypropylene, and the electret master batches and melt-blown cloth prepared by the electret master batches have the problems of large smell and quick electrostatic attenuation of the melt-blown cloth after electret treatment. In addition, the existing electret agent also has the problems of large polarity and poor compatibility with polypropylene, in the process of preparing the melt-blown cloth, after the electret treatment, a polar part can effectively capture real charges or polarized charges to form shallow-trap charges, but the charges are easy to lose in the thermal motion of electret agent molecules with poor compatibility with polypropylene and even the molecules migrate to the surface of the polypropylene, so that the problem of poor long-acting static holding capacity is caused.
The present invention aims to ameliorate at least one of the above technical problems to at least some extent.
In order to improve the technical problem, the invention provides a composition, which comprises 70-90 parts by weight of non-peroxide system melt-blown polypropylene, 10-40 parts by weight of an electret, and 1-2 parts by weight of an antioxidant, wherein the electret comprises stearate, hindered amine and amide compounds, the mass ratio of the stearate to the hindered amine is (1. Thus, the composition is resistant to high temperatures and is stable at high temperatures. The composition can be used as a raw material for preparing melt-blown cloth. The melt-blown fabric prepared from the composition has the advantages of few volatile substances, low odor and high filtering effect.
The inventor finds that when the electret agent comprises stearate, hindered amine and amide compounds, and the content of the stearate and the hindered amine is in the range, the three components can be matched with each other, so that the electret effect is good, the compatibility of the electret agent disclosed by the invention and non-peroxide system melt-blown polypropylene is good, the electret effect can be further improved, the initial filtration efficiency of melt-blown cloth is improved, and meanwhile, the filtration efficiency attenuation after accelerated aging can be reduced.
According to the embodiment of the present invention, the content of the electret is 10 to 40 parts by weight. If the addition amount of the electret agent is too small, the electret effect of the prepared electret master batch and the melt-blown cloth is poor, and the filtering efficiency is influenced. If the addition amount is too much, the cleaning frequency of the filter screen is greatly improved, and the continuous production is not facilitated. When the content of the electret is 10-40 parts by weight, the filtration efficiency can be ensured, and meanwhile, the continuous production is facilitated.
According to the embodiment of the present invention, the content of the amide-based compound is 1 to 3 parts by weight, for example, 1 part by weight, 1.5 parts by weight, 2 parts by weight, 2.5 parts by weight, or 3 parts by weight, based on the total mass of the composition. When the content of the amide compound is within the above range, the synergistic effect between the three components of the electret agent can be further enhanced, and a better electret effect is achieved.
According to an embodiment of the present invention, the amide compound includes at least one of stearyl erucamide, N' -ethylene bisstearamide, erucamide. The amide compound can be matched with stearate and hindered amine to achieve a good electret effect. In addition, the amide compound disclosed by the invention is high-temperature resistant, can still stably exist at a high processing temperature, and has good compatibility with non-peroxide system melt-blown polypropylene.
According to the embodiment of the invention, the stearyl erucamide has better heat resistance and better compatibility with non-peroxide system melt-blown polypropylene, so that the stearyl erucamide is not easy to migrate out of a polypropylene main body during high-temperature high-humidity and high-low temperature aging, the bad problem of charge loss caused by absorbing moisture in air is avoided, and the stearyl erucamide has better electret effect and higher filtering efficiency. Specifically, stearyl erucamide has a better long-acting filtering effect, and the filtering efficiency in the high-temperature high-humidity test and the filtering efficiency in the high-temperature low-temperature test are higher.
According to an embodiment of the invention, the stearate comprises at least one of lithium stearate, magnesium stearate, zinc stearate, calcium stearate. The stearate is combined with hindered amine and amide compounds for use, so that the filtration efficiency attenuation of the melt-blown cloth under high temperature and high humidity can be obviously reduced.
According to the embodiment of the invention, lithium stearate has better heat resistance compared with magnesium stearate, zinc stearate and calcium stearate, and has more obvious electret effect at high processing temperature.
According to an embodiment of the invention, the hindered amine comprises at least one of the following:
a polymer of a reaction product of N, N' -bis (2, 6-tetramethyl-4-piperidyl) -1, 6-hexanediamine, 2,4, 6-trichloro-1, 3, 5-triazine, N-butyl-1-butylamine, N-butyl-2, 6-tetramethyl-4-piperidylamine (trademark: chimassorb 2020, hereinafter abbreviated as 2020);
poly-6- (1, 3-tetramethylbutyl) amino-s-triazine-2, 4-diyl- (2, 6-tetramethyl-4-piperidyl) imino-1, 6-hexanediyl- (2, 6-tetramethyl-4-piperidyl) imido (tradename Chimassorb-944, hereinafter abbreviated as 944);
poly { (6-morpholinyl-5-triazine-2, 4-diyl) (2, 6-tetramethylpiperidyl) iminohexamethylene [ (2, 6-tetramethylpiperidyl) -imino ] } (trade name Cyasorb 3346, hereinafter abbreviated as 3346). The addition of hindered amines of different structures can significantly affect the initial filtration efficiency and long-lasting filtration capacity of meltblown fabrics.
According to the embodiment of the invention, the hindered amine 944 used as the electret agent has high initial filtration efficiency, the filtration efficiency attenuation after accelerated aging is smaller, and the anti-aging effect is better. This is because 944 in the unit molecular chain has a more suitable number of electron-rich piperidine ring structures than other hindered amines, and this structure can be used as a charge trapping center, and can trap charges after electret, enhancing electrostatic strength, so that while providing a higher initial filtration efficiency, the density of the charge trapping center is moderate, and a charge path is less likely to be formed during molecular thermal motion, so that the charge path is less likely to migrate, conduct and run off, and the long-acting electret effect is better.
According to an embodiment of the present invention, the melt-blown polypropylene of the non-peroxide system has a melt index of 1000 to 2000g/10min, which is measured at 270 ℃/2.16kg, i.e., the melt index is the melt flow rate measured at a temperature of 270 ℃ and a load of 2.16kg.
The meltblown fabric prepared by the traditional peroxide system meltblown polypropylene has pungent smell and has potential danger to human health after being worn for a long time. The inventor finds that the hydroxylamine ester polypropylene fluidity auxiliary agent can improve the melt index of the low-melt-index homopolymerized polypropylene (the melt index is 50-100g/10 min), and can improve the melt index of the low-melt-index homopolymerized polypropylene (the melt index is 50-100g/10 min) to 1000-2000 g/10min, thereby meeting the requirement of preparing the melt-blown fabric on the melt index of the raw material. In addition, the obtained non-peroxide system melt-blown polypropylene has the advantage of low odor, and the prepared melt-blown cloth has low odor and can reduce the harm to the human health.
Aiming at the problems that the non-peroxide system melt-blown polypropylene needs higher processing temperature (about 250-300 ℃), partial decomposition of raw materials exists, and the melt-blown cloth has fast electrostatic attenuation after electret treatment. In order to improve the technical problems, the electret compounded by three components of stearate, hindered amine and amide compounds is used, and asymmetric hindered phenol and heterocyclic phosphite ester are used as antioxidants, so that the electret and the antioxidants have the advantage of high temperature resistance, can stably exist at a high processing temperature, and the problem of partial decomposition of raw materials in the processing and preparation process of melt-blown polypropylene by adopting a non-peroxide system is solved. The electret agent disclosed by the invention has the advantages that three components are matched with each other, the electret agent disclosed by the invention has good compatibility with melt-blown polypropylene of a non-peroxide system, a good electret effect can be realized, the problem of rapid electrostatic attenuation of the existing melt-blown cloth is solved, and the finally prepared melt-blown cloth has high filtering efficiency and can meet the requirement of a mask on the filtering efficiency of the melt-blown cloth. According to the embodiment of the invention, the non-peroxide system melt-blown polypropylene is formed by melt co-extrusion of low-melting-index homopolymerized polypropylene and hydroxylamine-based polypropylene flow promoter, wherein the low-melting-index homopolymerized polypropylene has a melt index of 50-100g/10min, such as 50g/10min, 55g/10min, 60g/10min, 65g/10min, 70g/10min, 75g/10min, 80g/10min, 85g/10min, 90g/10min, 95g/10min and 100g/10min, the determination condition of the melt index is 230 ℃/2.16kg, namely the melt index is the melt flow rate measured under the conditions of 230 ℃ and 2.16kg load.
According to some embodiments of the present invention, 97 parts by weight of low melting-index homo-polypropylene, 2 parts by weight of hydroxylamine based polypropylene flow aid and 1 part by weight of processing aid are mixed and extruded at a temperature of 260 to 280 ℃ for granulation to obtain non-peroxide system melt-blown polypropylene. The processing aid is erucamide. The invention is not limited to specific processing conditions, and the technical personnel can adjust the processing conditions according to the use requirements, for example, the mixed materials can be extruded by a double-screw extruder to prepare the non-peroxide system melt-blown polypropylene. The temperature of the extrusion may be 260 deg.C, 265 deg.C, 270 deg.C, 275 deg.C or 280 deg.C.
According to an embodiment of the present invention, the mass ratio of the asymmetric hindered phenol to the heterocyclic phosphite is 1: (1.8-2.2). Within the range of the mixture ratio, the antioxidant has better antioxidant effect. The inventors have found that the antioxidant of the present invention has a significant gain effect, and can simultaneously improve the initial filtration efficiency and the resistance to decay of filtration after accelerated aging, as compared to the combination of pentaerythrityl tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] (antioxidant 1010) and tris [2, 4-di-tert-butylphenyl ] phosphite (antioxidant 168) conventionally used in the preparation of meltblown fabrics.
According to an embodiment of the present invention, the asymmetric hindered phenol includes at least one of ethylene glycol bis-3- (3-tert-butyl-4-hydroxy-5-methylphenyl) propionate (trade name Irganox 245, hereinafter referred to as 245) and 3, 9-bis [1, 1-dimethyl-2- [ (3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy ] ethyl ] -2,4,8, 10-tetraoxaspiro [5.5] undecane (trade name STAB AO-80, hereinafter referred to as AO-80).
The heterocyclic phosphite includes at least one of 3, 9-bis (2, 4-dicumylphenoxy) -2,4,8, 10-tetraoxa-3, 9-diphosphaspiro [5.5] undecane (trade name: revonox 608, hereinafter abbreviated as 608) and bis (2, 4, 6-tri-t-butylphenyl) pentaerythritol diphosphite (trade name: RC 633).
The invention also provides an electret master batch which is formed by the composition. The electret master batch can be used for preparing melt-blown cloth with low smell and long filtration effect. The electret master batch provided by the invention is high-temperature resistant, can not be decomposed at a high processing temperature (250-300 ℃), and solves the problem that the raw materials are partially decomposed in the existing electret master batch preparation process. The electret master batch has lower smell in the raw materials, and the problems that the existing electret master batch has pungent smell and is harmful to human health are solved. In addition, the electret masterbatch has all the characteristics and advantages of the composition, and the details are not repeated herein.
The invention also provides a method for preparing the electret master batch, which comprises the steps of melting, extruding and granulating the composition at 260-280 ℃ to obtain the electret master batch. Therefore, the melt-blown fabric prepared from the electret master batch has higher filtering efficiency and low odor after high-temperature high-humidity and high-low temperature accelerated aging.
According to some embodiments of the present invention, the electret master batch has a melt index of 1500 to 2500g/min, which is measured at 270 ℃/2.16kg, i.e., the melt index is a melt flow rate measured at a temperature of 270 ℃ and a load of 2.16kg.
The invention does not limit the specific processing parameters, and technicians can adjust the parameters according to the use requirements. For example, the method of preparing the electret masterbatch may include: weighing the components according to the proportion of the composition, uniformly mixing the components by using a high-speed mixer, wherein the rotating speed of the high-speed mixer is 500-1000 rpm, and stirring the components for 4-6 min to obtain a premix, and performing melt extrusion on the premix by using a double-screw extruder at the temperature of 260-280 ℃ to obtain the electret master batch.
The invention also provides application of the electret master batch in preparing melt-blown fabric. The electret master batch can be used for preparing melt-blown cloth with low odor and high filtering efficiency.
The invention also provides a method for preparing the melt-blown cloth, and referring to fig. 2, the melt-blown polypropylene of the non-peroxide system and the electret master batch are mixed, melt-blown and spun at the temperature of 280-300 ℃, and the electret is subjected to corona discharge to obtain the melt-blown cloth, wherein the electret master batch is the electret master batch. Therefore, the method has all the characteristics and advantages of the electret master batch, and the details are not repeated herein. In general, the melt-blown fabric prepared by the electret master batch has excellent long-acting charge retention capacity, and the filtration efficiency is reduced after high-temperature high-humidity and cold-hot aging treatment. The melt-blown fabric prepared by the invention has the advantage of low peculiar smell, has small influence on human health after being worn for a long time, and avoids the problem that the existing melt-blown fabric is harmful to human health.
According to the embodiment of the invention, the non-peroxide system melt-blown polypropylene and the electret master batch can be respectively fed and mixed according to the metering amount during mixing.
According to the embodiment of the invention, the content of the non-peroxide system melt-blown polypropylene is 96-98 parts by weight, and the content of the electret master batch is 2-8 parts by weight. In some embodiments of the present invention, the content of the electret masterbatch may be 2 to 6 parts by weight, or 2 to 4 parts by weight, and the technician may adjust the content according to the requirement. It should be noted that increasing the content of the electret masterbatch can increase the filtration efficiency of the prepared meltblown fabric, but too high content of the electret masterbatch is not conducive to continuous production. The content range not only can ensure higher filtering efficiency, but also can be beneficial to continuous production.
The invention is not limited to specific processing conditions, and technicians can adjust the processing conditions according to use requirements. For example, melt-blown non-peroxide system polypropylene and electret master batch are melt-spun in proportion through an extruder, a pipeline and a melt-blowing machine, and electret is discharged through a corona machine to obtain melt-blown fabric. Wherein, the temperature of each area and each pipeline of the single screw extruder is set to be 280-300 ℃, the temperature of hot air is set to be 270-280 ℃, the voltage of the electret is 48KV, and the electret distance is 10cm.
According to an embodiment of the present invention, the melt-blown polypropylene of the non-peroxide system has a melt index of 1000 to 2000g/10min measured at 270 ℃/2.16kg, i.e., the melt index is the melt flow rate measured at a temperature of 270 ℃ and a load of 2.16kg.
The present invention will be further described with reference to the following examples. The starting materials for the examples and comparative examples are either commercially available or prepared by known methods.
The raw material manufacturers and designations used in the following examples and comparative examples are as follows:
the low-melting-point polypropylene refers to homopolypropylene purchased from Tai-plastic Yongjia alkene 1900D, and the melt flow rate of the homopolypropylene is 90g/10min at the temperature of 230 ℃ and the load of 2.16 kg; the hydroxylamine based polypropylene flowability auxiliary agent is hydroxylamine based polypropylene flowability improving master batch IRGATEC CR76 (hereinafter referred to as CR 76) which is purchased from BASF.
Each hindered amine is: a basf light stabilizer 944, a basf light stabilizer 2020, and a cyanate 3346.
The stearates are respectively: shanghai canal lithium stearate, hunan Tiantang chemical magnesium stearate and zinc stearate.
The amide compounds are respectively: canava erucamide, shandong Seronol N, N' -ethylene bisstearic acid amide, and Shanghai canal stearyl erucamide.
The antioxidants are respectively: basf antioxidant 1010, basf antioxidant 245, basf antioxidant 168, adico AO-80, chia science 608 and RC633 of AK Scientific.
The method for measuring the melt flow rate of the melt-blown polypropylene and the electret master batch of the non-peroxide system comprises the following steps: according to the method of GB/T3682-2000 standard B and according to the processing condition, the temperature is adjusted, the measuring condition of melt-blown polypropylene of a non-peroxide system is 270 ℃/2.16kg, and the measuring condition of electret master batch of the non-peroxide system is 270 ℃/2.16kg.
Preparation of non-peroxide system melt blown polypropylene: 97 parts by weight of homopolymerized polypropylene with the melt index of 90g/10min (the measuring condition is 230 ℃/2.16 kg), 2 parts by weight of polypropylene fluidity improver master batch CR76 and 1 part by weight of erucamide are mixed, and then the mixture is extruded and cut into granules by a double screw at 270 ℃ to obtain the non-peroxide system melt-blown polypropylene with the melt index of 1000 to 2000g/10min (the measuring condition is 270 ℃/2.16 kg).
Examples 1 to 16 and comparative examples 1 to 11
The components and the use amounts of the compositions for preparing the electret master batch of the examples 1 to 16 and the comparative examples 1 to 11 are shown in table 1, the non-peroxide system melt-blown polypropylene, the electret and the antioxidant are weighed according to the proportion in the table 1, the melt-blown polypropylene, the electret and the antioxidant are mixed for 5min in a high-speed mixer with the rotating speed of 500 to 1000rpm to obtain premix, the premix is melt-extruded by a double-screw extruder, the temperature of each zone of the extruder is 260 to 280 ℃, and the electret master batch is obtained by vacuum granulation.
TABLE 1 Components and amounts of compositions for making electret masterbatches
Sample examples 1 to 31
Melt-blown polypropylene of a non-peroxide system and electret master batches prepared in the embodiment or the comparative example are added into a single-screw extruder according to the proportion in the table 2 for melt extrusion, the melt enters a spinneret plate after passing through a pipeline and a metering pump, the melt is stretched and cooled into fine fibers by high-speed hot air at the outlet of the spinneret plate and is deposited on a net curtain, and a formed product is drawn to the electret electrode through the net curtain to carry out corona electret, so that the melt-blown fabric is prepared. Wherein, the temperature of each area and pipeline of the single screw extruder is set to be 280-300 ℃, the temperature of hot air is set to be 270-280 ℃, the voltage of the electret is 48KV, and the electret distance is 10cm.
Sample testing
The prepared meltblown fabric was subjected to initial filtration efficiency, high temperature, high humidity and high and low temperature accelerated aging tests, and the test results are shown in table 2.
The test method for initial filtration efficiency (hereinafter referred to as a) is referred to the test method for YY0469-2011 Particle Filtration Efficiency (PFE).
The high-temperature high-humidity test method comprises the following steps: the sample was placed in an environmental chamber at 85 ℃ and 85% relative humidity for 72 hours, then taken out, and after being left in a dry environment at room temperature for 24 hours, the filtration efficiency was examined (hereinafter referred to as B).
The high and low temperature test method comprises the following steps: the sample was placed in an oven at 100 ℃ for 3 hours, then in a freezer at-30 ℃ for 3 hours, and after taking out and placing in a room temperature drying environment for 1 hour, the filtration efficiency was measured (hereinafter referred to as C).
TABLE 2 sample examples and filtration efficiencies
As can be seen from table 2, the filtration efficiency of sample examples 1-16 is significantly higher than that of sample examples 17-27, indicating that only when the composition has components and contents within the range of the present application, the meltblown prepared therefrom has excellent filtration efficiency, and the initial filtration efficiency, the filtration efficiency of the high temperature and high humidity test and the filtration efficiency of the high temperature and low temperature test of the prepared meltblown are all higher than 95%, which can satisfy the requirements of the mask for the filtration efficiency of the meltblown. In addition, the melt-blown fabric prepared by the method has low odor, can reduce the harm to the human health, and overcomes the defects that the existing melt-blown fabric has pungent odor and is harmful to the human health.
According to an embodiment of the present invention, the non-peroxide system melt blown polypropylene is preferably present in an amount of 70 to 90 parts by weight, more preferably 70 to 88 parts by weight, more preferably 70 to 87.2 parts by weight, even more preferably 70 to 84.2 parts by weight, and the antioxidant is preferably present in an amount of 1.2 to 2 parts by weight, more preferably 1.2 to 1.8 parts by weight.
The filtration efficiency of samples 17-18 was slightly poor because sample 17 used conventional antioxidants 1010 and 168, but not the antioxidant of the present application. The mass ratio of stearate to hindered amine in sample 18 is outside the preferred range of the present application, further indicating that better filtration efficiency can be achieved and the mask requirements for filtration efficiency of meltblown fabric are met only when the antioxidant of the present invention is used and the mass ratio of stearate to hindered amine is within the range of the present invention.
The melt-blown fabric of sample example 19 had a poor filtration effect due to an excessively small content of the electret.
The initial filtration efficiency, the filtration efficiency in the high temperature and high humidity test, and the filtration efficiency in the high temperature and low temperature test of sample example 1 were all higher than those of sample examples 8 and 9, which shows that lithium stearate has a better effect than magnesium stearate and zinc stearate.
As can be seen from comparison of sample examples 1 to 16 with sample examples 21 to 27, the effect of the electret compounded with three components, namely, stearate, hindered amine and amide compound, is significantly better than that of an electret having two or one component.
From the comparison between sample 30 and sample 1, 28, 29, and 31, it can be seen that when the content of the auxiliary master batch is 2 parts by weight or more, the initial filtration efficiency of the meltblown fabric, the filtration efficiency in the high temperature and high humidity test, and the filtration efficiency in the high temperature and low temperature test are all greater than 95%, and the requirements of the mask on the filtration efficiency of the meltblown fabric can be satisfied.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (13)
1. A composition comprising 70 to 90 parts by weight of a non-peroxide system melt-blown polypropylene, 10 to 40 parts by weight of an electret, 1 to 2 parts by weight of an antioxidant;
the electret agent comprises stearate, hindered amine and an amide compound, wherein the mass ratio of the stearate to the hindered amine is (1;
the antioxidants include asymmetric hindered phenols and heterocyclic phosphites.
2. The composition according to claim 1, wherein the content of the amide-based compound is 1 to 3 parts by weight based on the total mass of the composition;
the amide compound comprises at least one of stearyl erucamide, N' -ethylene bisstearic acid amide and erucamide.
3. The composition of claim 2, wherein the stearate comprises at least one of lithium stearate, magnesium stearate, zinc stearate, and calcium stearate.
4. The composition of claim 2, wherein the hindered amine comprises at least one of:
a polymer of a reaction product of N, N' -bis (2, 6-tetramethyl-4-piperidyl) -1, 6-hexanediamine, 2,4, 6-trichloro-1, 3, 5-triazine, N-butyl-1-butylamine, N-butyl-2, 6-tetramethyl-4-piperidylamine;
poly-6- (1, 3-tetramethylbutyl) amino-s-triazine-2, 4-diyl- (2, 6-tetramethyl) -4-piperidinyl) imino-1, 6-hexanediyl- (2, 6-tetramethyl-4-piperidinyl) imido;
poly { (6-morpholinyl-5-triazine-2, 4-diyl) (2, 6-tetramethylpiperidyl) iminohexamethylene [ (2, 6-tetramethylpiperidyl) -imino ] }.
5. The composition of claim 1, wherein the melt index of the non-peroxide system melt blown polypropylene is from 1000 to 2000g/10min.
6. The composition of claim 5, wherein the non-peroxide system melt blown polypropylene is formed by melt co-extrusion of a low melt index homopolypropylene and a hydroxylamine based polypropylene flow aid;
wherein the low-melting-point homopolymerized polypropylene has a melt index of 50-100g/10min.
7. The composition of claim 1, wherein the mass ratio of the asymmetric hindered phenol to the heterocyclic phosphite is 1: (1.8-2.2).
8. The composition of claim 7, wherein the asymmetric hindered phenol comprises at least one of ethylene glycol bis-3- (3-tert-butyl-4-hydroxy-5-methylphenyl) propionate and 3, 9-bis [1, 1-dimethyl-2- [ (3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy ] ethyl ] -2,4,8, 10-tetraoxaspiro [5.5] undecane;
the heterocyclic phosphite includes at least one of 3, 9-bis (2, 4-dicumylphenoxy) -2,4,8, 10-tetraoxa-3, 9-diphosphaspiro [5.5] undecane and bis (2, 4, 6-tri-tert-butylphenyl) pentaerythritol diphosphite.
9. An electret masterbatch formed from the composition of any one of claims 1-8.
10. A method for preparing the electret master batch according to claim 9, wherein the composition according to any one of claims 1 to 8 is melt-extruded at a temperature of 260 ℃ to 280 ℃ and granulated to obtain the electret master batch.
11. Use of the electret masterbatch of claim 9 for the preparation of a melt-blown fabric.
12. A method of making a meltblown, comprising:
mixing the non-peroxide system melt-blown polypropylene and the electret master batch, performing melt spinning at the temperature of 280-300 ℃, and performing corona discharge electret to obtain melt-blown cloth;
wherein the electret master batch is the electret master batch of claim 9.
13. The method of claim 12, wherein the non-peroxide melt-blown polypropylene is present in an amount of 96 to 98 parts by weight of the mixture and the electret masterbatch is present in an amount of 2 to 8 parts by weight of the mixture.
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